unmarked (version 0.8-5)

detFuns: Detection functions used by distsamp

Description

These functions represent the currently available detection functions used for modeling line and point transect data with distsamp

Usage

gxhn(x, sigma)
gxexp(x, rate)
gxhaz(x, shape, scale)
grhn(r, sigma)
grexp(r, rate)
grhaz(r, shape, scale)

Arguments

x

Perpendicular distance

r

Radial distance

sigma

Shape parameter of half-normal detection function

rate

Shape parameter of negative-exponential detection function

shape

Shape parameter of hazard-rate detection function

scale

Scale parameter of hazard-rate detection function

See Also

distsamp for example of using these for plotting detection function